Pressure-gage.



H B. AZADIAN. PRESSURE GAGE.

APPLIOA'TKOH FILED MAY 20, 1909.

1,072, 11 5. Patented Sept. 9, 1913.

Ii ITNESSES: INVENTOR. uzafdwwi WWIJJW 1%,. vi 4: BY ra AQ .4 TTO/UNE 1:5;

HARUTUN B. AZADIAN, O1! SYRACUSE, NEW YORK, ASSIGNOR TO AKABI B. AZADIAN,

' F SYRACUSE, NEW YORK.

straw-r anion.

PRESSURE- GAGE.

Specification of Letters Patent.

atented Sept. 9, 1913.

Application filed may 20, 1909. Serial No. 49%,291.

. America, have invented new and useful I111- rovements in Pressure-Gages, of which the ollowing, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of gages-which embody a circularsluiped llat' tenedrt-ube rigidly sustained at one end and communicating at said end with an airor steam-pipe, the opposite or free end of the tube being closed and connected by a suitable mechanism to a pointer or indicator which itravei'ses a dial, it being well known to persons familiar with such construction that through the admission of the air or steam into the circular tube the latter tends to straighten out and automatically return to its normal shape incident to the increase and decrease in pressure, wherch the pointer is moved accordingly over the ial. One of the objects of the present invention is to produce a pressure-gage of the type specified which shall be very simple, strong and durable in construction, and will permit the parts to be easily and quickly assembled, and which will be inexpensive to manufacture. I

Another object of the pnesent invention is to provide the gage with simple, reliable and convenient means for adjusting the pointer or indicator when required.

To that end the invention consists in certain novel details in the construction of the gage as hereinafter fully described and set forth in theclaims.

In the accompanying drawings Figure 1. is a front View of a pressure-gage, with the inclosing-case and dial broken away to illustrate my improvemcntslfiig. 2. is a front view of the interior of the inclosing case with the dial removed; Fig. 3 is a detached edge view of the disk on which the usual circular-shaped air-'01" steam-tube and the pointer-operating mechanism are supported; Fig. 4. is a horizontal section on the line --m-min Fig. 3; Fig. 5. is an enlarged detail front view showing more clearly the pivotal support of the pointer and pon1ter adjusting means; Fig. 6. is a. longitudinal sectional view on the line Y-Y-- in Fig.

5; and Fig. 7. is a detail view of the pointer. Like inunerals of reference indicate like parts in the several views of the drawings.

This gage is more particularly adapted to be attached to an air-pipe for indicating the pressure, and is especially designed to be used in the inflation .of auimnobile-tircs, although it may be used in many other instances.

The gage comprises an inclosing-case -1- which may be of any suitable style, and is provided with a removable front -2- which may have a glass iiacc, or be formed with a sight-opening 3- as shown. The front is secured in position by means of screws -----=l--i which extend into the case and upon which the marginal portion of the usual dial -5- rests, said dial 'being secured in the case by means of a screw -tipassing throughcoinciding apertures provided in t e nland an ear -7-- projecting on the interior of the case.

Within the case is disposed a metal disk -8-- secured to the rear wall by means of screws --9--9. This disk is provided with the usual transverse bore -10 extending .from its center to the edge thereof and i The said tube embraces a portion of the disk as usual and is rigidly secured at one end in a lug --13- projecting from the front face of the disk at its edge, at which end the said tube connnunicates with the airpassage -10-- in the well known manner, the opposite or free end of the tube being closed.

The parts heretofore referred to are well known in gages and therefore do not require further description.

My invention resides in the construction and arrangement of the adjustable pointer, its support and actuating mechanism, in combination with the circular-shaped flattened tube as will now be explained.

-14.---.. denotes a post rigidly projecting from the, disk -8'- and preferably secured in an aperture provided in a projection 01' I plate -20- deflected from the lug -'15- on the edge of the dish and dispolsed adjacent to the sustained end of the U1 6 I i -16 denotes thcpointer which LS pivotally connected to the post -1lso as to traverse the dial 5-. vint'hc well known manner. On the said post is supported oscillating means which nio'ves the pointer and is actuated by aforesaid tube. This oscillating means comprises preferably two connected'levers -l7 1S-'- pivoted to the respective end portions of the post, theouter lever having the pointer adjustably connected to it, and the other lever connected to the free end of the tube. I prefer to connect the pivoted ends of the lever by an integral bar -19 disposed parallel to the post 14-, the outer end of which post protrudes slightly through the lever -l7-. The pointer is formed integral with a fiat which is provided with an aperture -2lreceiving loosely through it the protruding outer end of the post. Into the outer end of the post is inserted a screw -22 which bears with its head on the plate 20-. This plate is connected to the outer end of the lever -17- by means of a screw -23-- passing through the parts. To permit the pointer to be adjusted in relation to the dial when required, I provide the plate -20- with a curved slot 2d which is concentric with the pivot, and coincides with a threaded ayierture-25. in the lever 17. The screw -23-- extends through the slot -24 and is inserted in the aperture -25- whereby its head bearson the outer face of the plate -20 to clamp the latter adjustably to the lever. ihe inner lever V 18- is curved so as to eX- tend part way around the post ll and is disk -8-, the free end of which lever is provided with a threaded which, apertures pass a screw -29-.

aperture .-36-. To said lever IS- is connected one end of a rod 27- provided thereat with a plain aperture -28- coinciding with the aperture -2G, through The opposite end of the rod -27-' is provided with a plain aperture 30- coinciding with a threaded aperture in an ear -3lformed on the free end of the circular-shaped fiattened tube, through which apertures pass a screw -32.

What I claim as my invention is:

1. In a pressure-gage of the class specitied, the combination with a suitably 'su s-. tained disk and a dial supported in front of the disk, of a post secured to the disk near 0st, an oscillating lever pivoted to the post,,

ighe edge thereof, a pointer pivoted to said ressure-controlled meansfor actuating the lever, and means for connecting the pointer adjustably to the lever as set forth.

2. In a pressuragage of the type specitied, the combination with a suitablyysupported disk, and a circular-shaped flattened airtube attached at one end to the disk, of a post secured'to the disk adjacent to the attached end of the tube, two connected levers mounted on the post, a pointer pivoted at one end to the post and actuated by one lever, the said tube to the other lever for operating the latter as set forth. v

3. In a pressure-gage of the type speci tied, the combination with a suitably supported disk and a circular-shaped flattened and means connecting the free end of air-tube rigidly attached at one end to said disk, of apost rigidly mounted on the disk, two levers pivoted to the respective end p01- ticns of the post and connected by an integral bar disposed adjacent to and parallel with the post, a pointer. attached to a plate pivoted to the outer end of the post, said plate being provided with a slotwhich is concentric with the pivot, a screw passing through the slot and entering the adjacent lever for clamping the pointer adjustably to said lever, and a rod pivotally connected at one end to the other lever and pivotally connected at its opposite end to the free end of the tube as set forth.

HARUTUN B. AZADIAN. "Witnesses i Ginns B. Evunson, CHAS, W. KmscHn BAUM. 

